Studies about gender difference in mental rotation ability are well documented in the context of developed countries; though not in developing or low-income ones. This paper examined students' mental rotation ability as a function of gender in a disadvantaged community in Indonesia. The Spatial Reasoning Instrument (SRI) was used to test 334…

Whereas metaanalyses of cross-sectional adoption studies have indicated that there is an impact of early deprivation on adoptee's cognitive ability, these effects generally diminish markedly after upbringing in adoptive homes. Outcomes in terms of scholastic attainment were not quite so positive in a cross-sectional metaanalysis, but the Swedish…

Background: There is uncertainty about the extent to which language skills are part of general intelligence and even more uncertainty on whether deprivation has differential effects on language and non-language skills. Methods: Language and cognitive outcomes at 6 and 11 years of age were compared between a sample of 132 institution-reared…